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COMSOL Multiphysics® contains several tools, operations, and functionality that can help you create a geometry for your model. One such tool, Partition Operations, enables you to separate out any part of your model's geometry. This is useful for splitting geometric entities such as objects, domains, boundaries, and edges and for removing parts of your model's geometry, either to clean it up or to simplify the model. In addition, this functionality is helpful for when you want to improve a model's mesh as well as when you are working with a geometry that is complex or has parts exhibiting a high aspect ratio.

In this video, we discuss how to partition a geometry with work planes using two examples. First, using a helix primitive object, we show you how to divide and conquer the meshing for a relatively complex geometry by splitting it into smaller, simpler domains. Next, using the geometry from the shell-and-tube heat exchanger tutorial model, we demonstrate exploiting the symmetry of an object to simplify a simulation. This is done by splitting and then removing one half of the geometry using the Partition Objects and Delete Entities operations, respectively. As a result, you can significantly reduce the computational time and memory required to solve the model.

Learn more about how partitioning can help you mesh and simplify your model by reading the following blog posts: